The electrocaloric effect (en. Electrocaloric effect) consists in increasing the temperature of a substance when an electric field of intensity E is created in it and a corresponding decrease in temperature when this field is turned off under adiabatic conditions. [one]
The effect is observed in a number of ferroelectric materials, including polymeric ones, although materials with a perovskite-type structure are among the most popular among researchers.
The electrocaloric effect was predicted back in the nineteenth century - in 1887, the famous physicist, William Thomson, Lord Kelvin, predicted the electrocaloric effect based on considerations of the reversibility of pyroelectricity (pyroelectricity is the appearance of an electric field in crystals when their temperature changes). The effect was experimentally observed by Soviet physicists I.V. Kurchatov and P.P. Kobeko . [2]
The electrocaloric effect opens up wide possibilities for creating solid-state cooling systems based on it, similar to the Peltier element, but based not on the flow of current, but on a change in the magnitude of the field strength. In one of the most promising materials, the magnitude of the temperature change was 0.48 Kelvin per volt of the applied voltage. [3]
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